import statistics

scores = [90, 98, 89, 92, 95, 96, 97, 98, 200, 100, 101, 109, 103, 104, 105, 106, 107, 108]
# 平均值
print(statistics.mean(scores))
# 中位数
print(statistics.median(scores))
# 众数
print(statistics.mode(scores))
# 方差
print(statistics.variance(scores))